Start with the report
Request the provider's checklist, readings, observed condition, and any deferred work. Compare them with the service you purchased and the manufacturer's care instructions.
Ask which parts of the outdoor unit, indoor unit, thermostat, and backup heat were covered. Were heating and cooling operation checked when conditions permitted? Were controls, airflow, and drainage assessed? If a test could not be completed, was that recorded?
Trane's example professional list includes airflow, electrical checks, reversing-valve and sensor review, and season-specific defrost checks. It illustrates the kinds of work to discuss, not a universal minimum or proof of what your visit included. Trane heat-pump checklist.
Ask what the readings establish
A temperature reading can show part of system performance. Ask what operating mode and conditions accompanied it and whether it was compared with an applicable equipment requirement.
A coil inspection may establish cleanliness or visible damage. It does not, by itself, demonstrate every control function or backup mode.
Refrigerant work should have a reason. Do not request a refrigerant top-up or repeated connection of service instruments simply to make the visit look thorough. Ask how the provider assesses operation and what finding would justify further refrigerant testing or adjustment.
Resolve omissions with a specific request
If the purchased scope or manual requires an item that was not completed, ask the provider to explain the omission and arrange the appropriate follow-up. If the original offer was a limited visual or seasonal inspection, compare that scope with the more complete care you need.
An active concern, such as inadequate heat, unusual noise, persistent ice, or unexpectedly frequent backup use, may require diagnosis beyond routine maintenance. Describe that concern directly instead of hoping the standard visit will cover it.
Your next step is to request the checklist and results, then identify any missing or deferred item by name. The goal is a useful record of the equipment's condition and a clear plan for unresolved work, rather than a longer checklist with no explanation of what it found.